Batch Solar Water Heater

Aim: To build a solar batch water heater using some old materials and some new. The idea behind this heater is to use as many old materials as possible, keeping them out of landfills and to use new materials as efficiently as possible. For this reason the box has been designed to use exactly two sheets of plywood without any waste. This also gives the box a trapezoid shape, making it stronger and angling the sides to reflect light onto the bottom of the tank. This was a lucky accidental…

Area and Perimeter Task Cards! Enter for your chance to win 1 of 3. Area and Perimeter Task Cards (13 pages) from Teacher Twins on TeachersNotebook.com (Ends on on 5-25-2014) This set of task cards includes 4 area and perimeter cards each for parallelograms, triangles and trapezoids. It also includes 4 area and circumference of circles.